One of our biggest complaints about Google Music was that you couldn't re-download any songs you'd added to your online library. Google's now brought this feature for the web interface and the Music Manager app, so you can download your music—whether it's your entire library or just a few tracks—with the click of a button.

This works for purchased music and songs you've uploaded yourself, though you can only download purchased tracks two times from the web interface. To do it, just click the triangle next to a song or group of songs and choose "Download Selected Songs". If you want to download your whole library, open up the Music Manager app for Windows, OS X, or Linux, go to the Download tab, and click "Export Your Library". You can do this as many times as you want, regardless of whether you've hit the limit for downloading purchased tracks or not. Hit the link to read more.